git-repack.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Linus Torvalds
   4 #
   5
   6 USAGE='[-a] [-d] [-f] [-l] [-n] [-q]'
   7 . git-sh-setup
   8
   9 no_update_info= all_into_one= remove_redundant=
  10 local= quiet= no_reuse_delta= extra=
  11 while case "$#" in 0) break ;; esac
  12 do
  13         case "$1" in
  14         -n)     no_update_info=t ;;
  15         -a)     all_into_one=t ;;
  16         -d)     remove_redundant=t ;;
  17         -q)     quiet=-q ;;
  18         -f)     no_reuse_delta=--no-reuse-delta ;;
  19         -l)     local=--local ;;
  20         --window=*) extra="$extra $1" ;;
  21         --depth=*) extra="$extra $1" ;;
  22         *)      usage ;;
  23         esac
  24         shift
  25 done
  26
  27 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
  28 PACKTMP="$GIT_DIR/.tmp-$$-pack"
  29 rm -f "$PACKTMP"-*
  30 trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
  31
  32 # There will be more repacking strategies to come...
  33 case ",$all_into_one," in
  34 ,,)
  35         rev_list='--unpacked'
  36         pack_objects='--incremental'
  37         ;;
  38 ,t,)
  39         rev_list=
  40         pack_objects=
  41
  42         # Redundancy check in all-into-one case is trivial.
  43         existing=`test -d "$PACKDIR" && cd "$PACKDIR" && \
  44             find . -type f \( -name '*.pack' -o -name '*.idx' \) -print`
  45         ;;
  46 esac
  47
  48 pack_objects="$pack_objects $local $quiet $no_reuse_delta$extra"
  49 name=$( { git-rev-list --objects --all $rev_list ||
  50           echo "git-rev-list died with exit code $?"
  51         } |
  52         git-pack-objects --non-empty $pack_objects "$PACKTMP") ||
  53         exit 1
  54 if [ -z "$name" ]; then
  55         echo Nothing new to pack.
  56 else
  57         if test "$quiet" != '-q'; then
  58             echo "Pack pack-$name created."
  59         fi
  60         mkdir -p "$PACKDIR" || exit
  61
  62         for sfx in pack idx
  63         do
  64                 if test -f "$PACKDIR/pack-$name.$sfx"
  65                 then
  66                         mv -f "$PACKDIR/pack-$name.$sfx" \
  67                                 "$PACKDIR/old-pack-$name.$sfx"
  68                 fi
  69         done &&
  70         mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
  71         mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
  72         test -f "$PACKDIR/pack-$name.pack" &&
  73         test -f "$PACKDIR/pack-$name.idx" || {
  74                 echo >&2 "Couldn't replace the existing pack with updated one."
  75                 echo >&2 "The original set of packs have been saved as"
  76                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
  77                 exit 1
  78         }
  79         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
  80 fi
  81
  82 if test "$remove_redundant" = t
  83 then
  84         # We know $existing are all redundant only when
  85         # all-into-one is used.
  86         if test "$all_into_one" != '' && test "$existing" != ''
  87         then
  88                 sync
  89                 ( cd "$PACKDIR" &&
  90                   for e in $existing
  91                   do
  92                         case "$e" in
  93                         ./pack-$name.pack | ./pack-$name.idx) ;;
  94                         *)      rm -f $e ;;
  95                         esac
  96                   done
  97                 )
  98         fi
  99         git-prune-packed
 100 fi
 101
 102 case "$no_update_info" in
 103 t) : ;;
 104 *) git-update-server-info ;;
 105 esac